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3rd gen scaps on 1st winter Ylg?
Posted: Fri Feb 03, 2012 9:20 pm
by Rui_Caratão
This amazing gull as been seen in Porto area, Portugal. 3rd generation very pale scapulars in what it seems to be a 1st winter Ylg is desconcertating...
Any opinions regarding age and ID???
http://img210.imageshack.us/img210/5836/sam1456s.jpg
http://img207.imageshack.us/img207/1728/sam1447l.jpg
http://img813.imageshack.us/img813/6836/sam1452.jpg
http://img37.imageshack.us/img37/2890/sam1459.jpg
regards,
Rui
Re: 3rd gen scaps on 1st winter Ylg?
Posted: Fri Feb 03, 2012 9:50 pm
by lou bertalan
hi rui,
an amazing bird. it seems to have a disturbed metabolism and the plain whitish scapulars might even be leucism? and not necessarily 3rd gen. no covert is replaced and even scapular moult is not finished, though i think it is indeed the most retarded mich i ever seen.
cheers
lou
Re: 3rd gen scaps on 1st winter Ylg?
Posted: Sat Feb 04, 2012 10:03 pm
by Rui_Caratão
Are you sure it could be leucism, in one of the photos is visible a very pale bluish/grey tinge very similar with Black headed gull scaps...did you noticed the orange on gonys???
http://img684.imageshack.us/img684/8739/sam1437cf.jpg
Re: 3rd gen scaps on 1st winter Ylg?
Posted: Sun Feb 05, 2012 7:52 pm
by Dave
I agree with Lou that looks like a case of leucism. Certainly that seems more probable, especially since this bird has some obvious pigment issues in its bill.
Dave
Re: 3rd gen scaps on 1st winter Ylg?
Posted: Mon Feb 06, 2012 2:45 am
by Rui_Caratão
That should probably be the case, thanks Dave and lou!!!
lou bertalan wrote:no covert is replaced and even scapular moult is not finished, though i think it is indeed the most retarded mich i ever seen.
Probably not so retarded, but this is the most typical january 1st winter "lusitanius", regarding moult
http://i58.photobucket.com/albums/g279/ ... resize.jpg
regards,
Rui
